coordinated activity - fluid movement and postures
comparison of motor activities (did the movement match the pre-movement plan?)
modification of motor output based on sensory input and prior motor output
compensation for motor tasks
predictive/anticipatory mvmnts - to get body read for mvmnt -like bracing when you see someone running towards you
learning new motor programs
how to eval a loss of anticipatory balance skills
have pt stand eyes closed feet together
someone who's impaired will sway, and won't catch himself until he's falling - he won't react to the loss of balance until it's too late to do a simple adjustment
one reason recovery frm a cerebellar injury is extra tough
the cerebellum plays a big role in learning...
vestibulocerebellum aka archicerebelum - lesions --> ? - receives input from and outflow to __
lesions --> inability to utilize vestibular inputs - therefore an inability to adjust to those inputs...
spinocerebellum/paleocerebellum - gets input from where? what is it in charge of?
input from spinocerebellar tracts
movement completion and muscle tone (this tone regulation is unrel to spasticty -it's about support muscle tone - like tightening your core as you pick up a heavy box - w/cerebellar lesions force becomes erratic -- pushing a button you'll vacillate between lots and little pressure)
cerebrocerebellum (neocerebellum) - where is it, input from where, output to where?
lateral cerebellar hemispheres
input from pontine nuclei
output to thalamus, motor and premotor cortex
cerebrocerebellum/neocerebellum controls what?
control of rapid movement
precise movement control
lesions where cause dysmetria and disdiadochokinesia
cerebrocerebellum / neocerebellum
(due to lesion in the cerebrocerebellum/neocerebellum)
inability to accurately jude the speed, force, or distance needed for a task
movement decomposition - lack of movement fluidity
8 signs of cerebellar dysfunction
cerebellar speecy - dysarthria
nystagmus and impaired extraocular movements
"lack of check"
pt flexes arm to 90 and tries to keep it here while PT tries to push it down
when PT suddenly releases arm should go up just once - if there's a lesion it'll bounce up and down and up and down
due to loss of control over diaphram, this speech will sporadically change in volume and intensity
test for dysmetria
finger-nose-finger at diff ranges, speeds, location
don't mistake weakness, spasticity, sensory loss for dysmetria!
difficulty w 2 alternating movements / impaired ability to perform rapid, alternating movements in hands or feet
don't mistake weakness, spasticity, contraction, or sensation troubles for a pos dis sign
components of mvmnt that can be messed up in disdiadochokinesia
test for disdiadochokinesia
flip flop hands on thighs
tap toes heels toes heels on floor
nice thing regarding cerbellar damage
the cerebelum is densly packed, so there's a good probability of neuroplasticity
cerebellar issues of the neck
fyi - can have cerebellar findings for jut one area - eyes, neck, etc